Portland Weather in March
Average highs run from 35°F on March 1 to 49°F on March 31, and lows from 19°F to 31°F. Normal precipitation for the month is 1.51 in over about 8 wet days.
March day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
March at a glance
- Average high
- 41°F
- Average low
- 25°F
- Precipitation
- 1.51 in
- Snowfall
- 9.9 in
- Record high
- 83°FMar 29, 1986
- Record low
- -35°FMar 1, 1962
- Chance of a freeze
- 100%
- Daylight
- 11 h 12 min to 12 h 42 min
- Cloud cover
- 64%
- Humidity
- 80%
- Dew point
- 26°F
- Wind
- 11.6 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Mar 1 | 35°F | 19°F | 58°F 1992 | -35°F 1962 | 23% | 18% |
| Mar 2 | 35°F | 19°F | 61°F 1923 | -18°F 1913 | 23% | 18% |
| Mar 3 | 36°F | 20°F | 61°F 1983 | -16°F 2002 | 23% | 18% |
| Mar 4 | 36°F | 20°F | 70°F 2024 | -16°F 2019 | 24% | 18% |
| Mar 5 | 37°F | 21°F | 68°F 2000 | -16°F 2019 | 24% | 17% |
| Mar 6 | 37°F | 21°F | 70°F 2000 | -15°F 1920 | 24% | 17% |
| Mar 7 | 37°F | 21°F | 78°F 2000 | -16°F 1959 | 25% | 17% |
| Mar 8 | 38°F | 22°F | 71°F 2000 | -8°F 1943 | 25% | 16% |
| Mar 9 | 38°F | 22°F | 66°F 2016 | -15°F 1975 | 25% | 16% |
| Mar 10 | 39°F | 23°F | 69°F 2026 | -14°F 2003 | 25% | 15% |
| Mar 11 | 39°F | 23°F | 67°F 2025 | -14°F 1948 | 25% | 15% |
| Mar 12 | 40°F | 23°F | 70°F 1990 | -11°F 1993 | 26% | 15% |
| Mar 13 | 40°F | 24°F | 68°F 1995 | -13°F 1975 | 26% | 14% |
| Mar 14 | 40°F | 24°F | 68°F 1995 | -15°F 1993 | 26% | 14% |
| Mar 15 | 41°F | 25°F | 76°F 2025 | -12°F 1997 | 26% | 14% |
| Mar 16 | 41°F | 25°F | 72°F 2012 | -13°F 1997 | 26% | 14% |
| Mar 17 | 42°F | 25°F | 77°F 2012 | -12°F 1959 | 27% | 13% |
| Mar 18 | 42°F | 26°F | 80°F 2012 | -8°F 1959 | 27% | 13% |
| Mar 19 | 43°F | 26°F | 77°F 2012 | -18°F 1923 | 27% | 13% |
| Mar 20 | 43°F | 27°F | 72°F 1918 | -17°F 1965 | 28% | 13% |
| Mar 21 | 44°F | 27°F | 76°F 2012 | -11°F 1965 | 28% | 12% |
| Mar 22 | 44°F | 27°F | 79°F 2026 | -1°F 1940 | 28% | 12% |
| Mar 23 | 45°F | 28°F | 77°F 1910 | -2°F 1940 | 28% | 12% |
| Mar 24 | 45°F | 28°F | 80°F 1939 | -6°F 1974 | 29% | 11% |
| Mar 25 | 46°F | 28°F | 78°F 1939 | 0°F 1960 | 29% | 11% |
| Mar 26 | 46°F | 29°F | 76°F 2007 | -7°F 1960 | 29% | 11% |
| Mar 27 | 47°F | 29°F | 78°F 2007 | -2°F 1964 | 30% | 11% |
| Mar 28 | 47°F | 30°F | 79°F 1910 | 0°F 1964 | 30% | 10% |
| Mar 29 | 48°F | 30°F | 83°F 1986 | -3°F 1969 | 30% | 10% |
| Mar 30 | 48°F | 30°F | 78°F 1967 | -3°F 1964 | 31% | 10% |
| Mar 31 | 49°F | 31°F | 82°F 1986 | -6°F 1969 | 31% | 10% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- March 1
- sunrise 6:40 AM, sunset 5:52 PM
- March 31
- sunrise 6:47 AM, sunset 7:29 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00471280 (Cashton), public domain. Records: NOAA GHCN-Daily, station USC00478827, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.